• The E commerce models of digital library to information users include subscription based sales model, pay per view model, online compliment model and pre paid model.

    数字图书馆信息用户电子商务模式主要网上订购付费浏览网上赠予以及预付模式

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  • Digital sales were up, however, and subscription-based services appear poised for growth.

    但是数字音乐销量反而上升而且基于订阅的服务表现出稳定增长的态势

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  • Digital sales were up, however, and subscription-based services appear poised for growth.

    但是数字音乐销量反而上升而且基于订阅的服务表现出稳定增长的态势

    youdao

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